I just bought a Gold Custom for my first foray into the Open division of USPSA. I've been reading that the extractor my have trouble with the rimless "super comp" brass that I bought. I've read Henning's tuning page, however Eric G says "I actually use the rimless brass from Armscor which fits perfectly the Tanfoglio with a 9mm extractor powered with a Wolff extra power extractor spring". Has anyone tried this option over removing metal?